From 112528c8abaf712e2db0f8aef6b7d64b52281127 Mon Sep 17 00:00:00 2001 From: Lars-Dominik Braun Date: Tue, 10 Jun 2008 09:26:12 +0200 Subject: Added missing files to repo --- libpiano/xml.c | 278 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 278 insertions(+) create mode 100644 libpiano/xml.c (limited to 'libpiano/xml.c') diff --git a/libpiano/xml.c b/libpiano/xml.c new file mode 100644 index 0000000..370d236 --- /dev/null +++ b/libpiano/xml.c @@ -0,0 +1,278 @@ +/* +Copyright (c) 2008 Lars-Dominik Braun + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + +#include +#include +#include +#include + +#include "piano.h" +#include "crypt.h" + +/* parses things like this: + * + * + * + * + * + * + * + * @author PromyLOPh + * @added 2008-06-03 + * @param xml node named "struct" (or containing a similar structure) + * @param who wants to use this data? callback: content of as + * string, content of as xmlNode (may contain other nodes + * or text), additional data used by callback(); don't forget + * to *copy* data taken from or as they will be + * freed soon + * @param + */ +void PianoXmlStructParser (xmlNode *structRoot, + void (*callback) (char *, xmlNode *, void *), void *data) { + + xmlNode *curNode, *memberNode, *valueNode; + xmlChar *key; + + /* get all nodes */ + for (curNode = structRoot->children; curNode; curNode = curNode->next) { + if (curNode->type == XML_ELEMENT_NODE && + xmlStrEqual ((xmlChar *) "member", curNode->name)) { + key = NULL; + valueNode = NULL; + /* check children for or */ + for (memberNode = curNode->children; memberNode; + memberNode = memberNode->next) { + if (memberNode->type == XML_ELEMENT_NODE) { + if (xmlStrEqual ((xmlChar *) "name", memberNode->name)) { + key = memberNode->children->content; + } else if (xmlStrEqual ((xmlChar *) "value", + memberNode->name)) { + valueNode = memberNode->children; + } + } + } + /* this will ignore empty nodes, but well... */ + if (key != NULL && valueNode != NULL) { + (*callback) ((char *) key, valueNode, data); + } + } + } +} + +/* structParser callback; writes userinfo to PianoUserInfo structure + * @author PromyLOPh + * @added 2008-06-03 + * @param value identifier + * @param value node + * @param pointer to userinfo structure + * @return nothing + */ +void PianoXmlParseUserinfoCb (char *key, xmlNode *value, void *data) { + char *valueStr = NULL; + PianoUserInfo_t *user = data; + + /* some values have subnodes like or , just + * ignore them... */ + if (value->content != NULL) { + valueStr = (char *) value->content; + } else if (value->children != NULL && + value->children->content != NULL) { + valueStr = (char *) value->children->content; + } + /* FIXME: should be continued later */ + if (strcmp ("webAuthToken", key) == 0) { + user->webAuthToken = strdup (valueStr); + } else if (strcmp ("authToken", key) == 0) { + user->authToken = strdup (valueStr); + } else if (strcmp ("listenerId", key) == 0) { + user->listenerId = strdup (valueStr); + } +} + +void PianoXmlParseStationsCb (char *key, xmlNode *value, void *data) { + PianoStation_t *station = data; + char *valueStr = NULL; + + /* FIXME: copy & waste */ + /* some values have subnodes like or , just + * ignore them... */ + if (value->content != NULL) { + valueStr = (char *) value->content; + } else if (value->children != NULL && + value->children->content != NULL) { + valueStr = (char *) value->children->content; + } + if (strcmp ("stationName", key) == 0) { + station->name = strdup (valueStr); + } else if (strcmp ("stationId", key) == 0) { + station->id = strdup (valueStr); + } +} + +/* FIXME: copy & waste */ +void PianoXmlParsePlaylistCb (char *key, xmlNode *value, void *data) { + PianoSong_t *song = data; + char *valueStr = NULL; + + /* some values have subnodes like or , just + * ignore them... */ + if (value->content != NULL) { + valueStr = (char *) value->content; + } else if (value->children != NULL && + value->children->content != NULL) { + valueStr = (char *) value->children->content; + } + if (strcmp ("audioURL", key) == 0) { + /* last 48 chars of audioUrl are encrypted, but they put the key + * into the door's lock; dumb pandora... */ + const char urlTailN = 48; + char *urlTail, *urlTailCrypted = valueStr + (strlen (valueStr) - urlTailN); + urlTail = PianoDecryptString (urlTailCrypted); + //printf ("tail is:\t%s\nwas:\t\t%s (%i)\nurl was:\t %s (%i)\n", urlTail, urlTailCrypted, strlen (urlTailCrypted), valueStr, strlen (valueStr)); + song->audioUrl = calloc (strlen (valueStr) + 1, sizeof (char)); + strncpy (song->audioUrl, valueStr, strlen (valueStr) - urlTailN); + /* FIXME: the key seems to be broken... so ignore 8 x 0x08 postfix; + * urlTailN/2 because the encrypted hex string is now decoded */ + strncat (song->audioUrl, urlTail, (urlTailN/2)-8); + free (urlTail); + + } else if (strcmp ("artistSummary", key) == 0) { + song->artist = strdup (valueStr); + } else if (strcmp ("musicId", key) == 0) { + song->musicId = strdup (valueStr); + } else if (strcmp ("matchingSeed", key) == 0) { + song->matchingSeed = strdup (valueStr); + } else if (strcmp ("userSeed", key) == 0) { + song->userSeed = strdup (valueStr); + } else if (strcmp ("focusTraitId", key) == 0) { + song->focusTraitId = strdup (valueStr); + } else if (strcmp ("songTitle", key) == 0) { + song->title = strdup (valueStr); + } +} + +/* parses server response and updates handle + * @author PromyLOPh + * @added 2008-06-03 + * @param piano handle + * @param utf-8 string + * @return nothing + */ +void PianoXmlParseUserinfo (PianoHandle_t *ph, char *xml) { + xmlNode *docRoot = NULL; + xmlDocPtr doc = xmlReadDoc ((xmlChar *) xml, NULL, NULL, 0); + + if (doc == NULL) { + printf ("whoops... xml parser error\n"); + return; + } + + docRoot = xmlDocGetRootElement (doc); + + /* */ + xmlNode *structRoot = docRoot->children->children->children->children; + PianoXmlStructParser (structRoot, PianoXmlParseUserinfoCb, &ph->user); + + xmlFreeDoc (doc); + xmlCleanupParser(); +} + +/* parse stations returned by pandora + * @author PromyLOPh + * @added 2008-06-04 + * @param piano handle + * @param xml returned by pandora + * @return nothing + */ +void PianoXmlParseStations (PianoHandle_t *ph, char *xml) { + /* FIXME: copy & waste */ + xmlNode *docRoot = NULL, *curNode = NULL; + xmlDocPtr doc = xmlReadDoc ((xmlChar *) xml, NULL, NULL, 0); + + if (doc == NULL) { + printf ("whoops... xml parser error\n"); + return; + } + + docRoot = xmlDocGetRootElement (doc); + + /* */ + xmlNode *dataRoot = docRoot->children->children->children->children->children; + for (curNode = dataRoot->children; curNode; curNode = curNode->next) { + if (curNode->type == XML_ELEMENT_NODE && + xmlStrEqual ((xmlChar *) "value", curNode->name)) { + PianoStation_t *tmpStation = calloc (1, sizeof (*tmpStation)); + PianoXmlStructParser (curNode->children, + PianoXmlParseStationsCb, tmpStation); + /* start new linked list or append */ + if (ph->stations == NULL) { + ph->stations = tmpStation; + } else { + PianoStation_t *curStation = ph->stations; + while (curStation->next != NULL) { + curStation = curStation->next; + } + curStation->next = tmpStation; + } + } + } + + xmlFreeDoc (doc); + xmlCleanupParser(); +} + +void PianoXmlParsePlaylist (PianoHandle_t *ph, char *xml) { + /* FIXME: copy & waste */ + xmlNode *docRoot = NULL, *curNode = NULL; + xmlDocPtr doc = xmlReadDoc ((xmlChar *) xml, NULL, NULL, 0); + + if (doc == NULL) { + printf ("whoops... xml parser error\n"); + return; + } + + docRoot = xmlDocGetRootElement (doc); + + /* */ + xmlNode *dataRoot = docRoot->children->children->children->children->children; + for (curNode = dataRoot->children; curNode; curNode = curNode->next) { + if (curNode->type == XML_ELEMENT_NODE && + xmlStrEqual ((xmlChar *) "value", curNode->name)) { + PianoSong_t *tmpSong = calloc (1, sizeof (*tmpSong)); + PianoXmlStructParser (curNode->children, + PianoXmlParsePlaylistCb, tmpSong); + /* begin linked list or append */ + if (ph->playlist == NULL) { + ph->playlist = tmpSong; + } else { + PianoSong_t *curSong = ph->playlist; + while (curSong->next != NULL) { + curSong = curSong->next; + } + curSong->next = tmpSong; + } + } + } + + xmlFreeDoc (doc); + xmlCleanupParser(); +} -- cgit v1.2.3